Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:
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Name : Andi Nadya Amanda Period : 4 Grade : 11 Enzyme Lab Report Question How heats effect the length of reaction time of an enzyme? Hypothesis I think the heat will make the length of reaction time of an enzyme become slowly. Heat is one of a way to denature the substrate. It means the heat will break down the structure of substrate in order the reaction of enzymes that we activated into it become slowly. Method for Collecting Data First I will record the length of reaction time
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Maria Ruiz Feb.7‚ 2012 Bio. Report Problem: Dows light intensity and wavelength affect Photosynthesis? Introduction: Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. It produces sugar and other organic compounds such as lipids and proteins. The sugars are then used to provide
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limited‚ Hyderabad‚ India. The standard drug Fenofibrate was purchased from USV limited‚ Himachal Pradesh‚ India. Assay kits for serum Total Cholesterol (TC)‚ Triglycerides (TGL)‚ High density lipoproteins were purchased from Erba Mannheim‚ Transasia Bio-Medicals limited‚ Himachal Pradesh‚ India. All other chemicals were of analytical grade. The experiment was conducted using [12] male Albino Wistar rats (150-200g)‚ at about 6-8 weeks of age. All the animals were procured from Sanzyme Ltd‚ Hyderabad
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Physics Lab Report 1. For the wavelength measurement of different colors in the Hydrogen spectrum done in the lab‚ tabulate your data recorded along with the wavelength calculations performed for all colors in the spectrum. (2 points) Line Color a_left (m) a_right (m) a_average (m) sinq nm Red 0.235 0.27 0.2525 0.182145 5.47E-09 Green-Blue 0.17 0.33 0.25 0.180505 5.42E-09 Indigo 0.16 0.35 0.255 0.18378 5.52E-09 Violet? 0 0 0 0 0 To find the wavelength for all of the colors in this lab we used two
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Introduction In this lab‚ the purpose was to verify Hess’s Law. Four main topics were covered during this experiment including enthalpy of reaction‚ heat of formation‚ Hess’s Law‚ and calorimetry. The enthalpy of reaction‚ ΔHrxn is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant pressure in the reaction. The change represents the difference in enthalpy of the products and the reactants and is independent of the steps
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results to. The ladder was used because it reads from 100bp up to 1200bp fragments and we were expecting the amelogenin fragments to be around 542bp and 358bp for X and Y chromosomes respectively. Afterward‚ the gel image was captured on a Kodak Gel 100 image acquisition system which is equipped with green filter for SYBR Green
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Nicolette Lindberg 11/30/12 IB Biology 2‚ Period 1 Transpiration Lab Background Information- Transpiration is the loss of water from a plant. Plants transpire water out of the stomata in their leaves at a different rate in every environment. The amount of transpiration is affected by the environment‚ how developed the plant is to not lose as much water‚ the surface area of the leaves‚ and how affected the plant is by its environment (Von Bargen). For this experiment‚ the plant we used was (Viola
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hanger Set of masses from 100 g up to 600 g Balance scale Science workshop interface with force sensor and rotational motion detector used as linear sensor Part 2 Collision cart of known mass on horizontal dynamics tracks oscillating by the means of a springs in parallel Motion sensor and photogate connected to Science workshop interface Non-linear springy objects (rubber bands) Two rectangular weights of ~0.5 kg each to change the mass of the system Procedure: The lab experiment was done in two
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Separating Substances: Identifying Food Dyes with TLC Background The color of food is an integral part of our culture and enjoyment of life. Who would deny the mouth-watering appeal of a deep-pink strawberry ice cream on a hot summer’s day or a golden Thanksgiving turkey garnished with fresh green parsley? Even early civilizations such as the Romans recognized that people "eat with their eyes" as well as their palates. Saffron and other spices were often used to provide a rich yellow color
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